Impara online a risolvere i problemi di passo dopo passo. 5-4x-2x^2. Applicare la formula: ax^2+bx+c=a\left(x^2+\frac{b}{a}x+\frac{c}{a}\right), dove a=-2, b=-4 e c=5. Applicare la formula: a\left(x^2+b+c\right)=a\left(x^2+b+c+\left(\frac{coef\left(b\right)}{2}\right)^2-\left(\frac{coef\left(b\right)}{2}\right)^2\right), dove a=-2, b=2x e c=-\frac{5}{2}. Applicare la formula: a\left(x^2+b+c+f+g\right)=a\left(\left(x+\sqrt{f}sign\left(b\right)\right)^2+c+g\right), dove a=-2, b=2x, c=-\frac{5}{2}, x^2+b=x^2+2x-\frac{5}{2}+1-1, f=1 e g=-1. Applicare la formula: \frac{a}{b}+c=\frac{a+cb}{b}, dove a/b+c=\left(x+1\right)^2-\frac{5}{2}-1, a=-5, b=2, c=-1 e a/b=-\frac{5}{2}.

5-4x-2x^2